This is a concept from a toy I had when I was a kid, and I cannot find it anymore. So I wanted to make a new version of it in 3D. I wanted it to be simple to print and it must be made out of small peaces. So here it is. I made this in 3Ds max. and rendered it with mental ray.
The cool thing about this game is that you can easily modify it. You can print more catapults for more players, and you can print more buckets to make the tower higher.